On Fri, Jan 29, 2010 at 9:12 AM, Minh Nguyen <nguyenmi...@gmail.com> wrote: > Hi William, > > On Sat, Jan 30, 2010 at 3:58 AM, William Stein <wst...@gmail.com> wrote: > > <SNIP> > >> I ran tests on skynet 2 days ago and *also* end up with that "optimal" >> running process sticking around. It ended up possibly crashing >> skynet, by the way. > > I have no such luck ;-) > > After my last doctest on skynet which crashed eno, I'm no longer able > to ssh to eno. In some ways this can be a good thing. I have thrice > crashed some machines on skynet while doctesting. I don't fancy having > another doctesting session that results in a fourth crash. > > >> What is this "optimal" program in Sage??????! >> >> I just tried to kill -9 yours... with no real luck. > > Me neither. I spent the better half of the last hour trying to "kill > -9" that optimal process, but to no avail.
Did you try lsof to try to nail down what relevant resources might be involved? Often the kernel will not remove a process from the process table until it frees up resources, which sometimes it can't do until other processes do. Right now the line for optimal in top is: 10108 mvngu 20 0 0 0 0 R 100 0.0 281:36.96 optimal This means that optimal is not using any memory resources at all (but 100% cpu, which is annoying). The "R" means that there is a resource that the kernel is waiting on before it will remove optimal from the process table. Given this: r...@sage:/home/wstein# lsof -p 10108 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME optimal 10108 mvngu cwd DIR 8,1 0 1984176 /mnt/usb1/scratch/mvngu/release/sage-4.3.2.alpha0/devel/sage-main/sage/interfaces (deleted) optimal 10108 mvngu rtd DIR 8,33 4096 2 / optimal 10108 mvngu txt unknown /proc/10108/exe (readlink: No such file or directory) I'm guessing there is something funny with how sage.math (=Ubuntu 9.10) deals with the external USB disk. It may make sense to try remounting that disk. I wonder if you deleting that directory (the sage-4.3.2.alpha0) install also confused things... but I don't know. William -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
